Double-Struck Italic Capital D ⅅ

U+2145
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Symbol Meaning

What are unfilled letters with inner and outer thin outlines usually called? Double struck. Some of these symbols are used to represent sets of natural, integer, rational, complex, and other numbers, such as , , .

Other double-stroke symbols, such as the double-struck italic uppercase letter “D”, do not have a strictly defined purpose. You can use them for writing formulas and calculations, as well as for decorating text.

The symbol “Double-Struck Italic Capital D” is included in the “Double-struck italic math symbols” subblock of the “Letterlike Symbols” block and was approved as part of Unicode version 3.2 in 2002.

Text is also available in the following languages: Español; Русский;

Unicode Name Double-Struck Italic Capital D
Unicode Number
HTML Code
CSS Code
Entity ⅅ
Plane 0: Basic Multilingual Plane
Unicode Block Letterlike Symbols
Unicode Subblock Double-struck italic math symbols
Unicode Version 3.2 (2002)
Type of paired mirror bracket (bidi) None
Composition Exclusion No
Case change 2145
Simple case change 2145
Math +
Alphabetic +
Uppercase +
Cased +
ID_Start +
ID_Continue +
XID_Start +
XID_Continue +
Grapheme_Base +
scripts Common
Other_Math +
Encoding hex dec (bytes) dec binary
UTF-8 E2 85 85 226 133 133 14845317 11100010 10000101 10000101
UTF-16BE 21 45 33 69 8517 00100001 01000101
UTF-16LE 45 21 69 33 17697 01000101 00100001
UTF-32BE 00 00 21 45 0 0 33 69 8517 00000000 00000000 00100001 01000101
UTF-32LE 45 21 00 00 69 33 0 0 1159790592 01000101 00100001 00000000 00000000
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